Leetcode 2698. Find the Punishment Number of an Integer (backtrack)
12:51
one year of studying (it was a mistake)
20:09
Leetcode 2376. Count Special Integers (digit dp with template)
13:37
Mathematics doesn't actually make any sense
12:23
Leetcode 738. Monotone Increasing Digits (greedy)
25:33
Leetcode 1397. Find All Good Strings (kmp and digit dp template)
21:03
5 Simple Steps for Solving Any Recursive Problem
17:44
3.4 Huffman Coding - Greedy Method
27:41